2021 Mazda MX-5

Here’s a breakdown of common issues reported for the 2021 Mazda MX-5 Miata, organized by category. The 2021 Mazda MX-5 Miata is a beloved roadster known for its nimble handling, engaging driving experience, and classic design. The 2021 MX-5 comes standard with a 2.0-liter inline-4 engine producing 181 horsepower and 151 lb-ft of torque. It is available with either a 6-speed manual or a 6-speed automatic transmission. Owners often praise the MX-5 for its affordability, fuel efficiency, and sheer driving fun. Criticisms often include limited cargo space, a snug interior, and some road noise.

Engine

2.0L Inline-4

• Excessive Oil Consumption
  • Description/Symptoms: Some owners have reported higher than expected oil consumption between oil changes. Symptoms include needing to add oil frequently, low oil level warnings, and, in severe cases, engine damage.
  • Solution: Monitor oil levels regularly. A Mazda dealer may perform an oil consumption test to determine the severity. In some cases, piston ring replacement might be necessary.
  • Estimated Cost to Fix: $1,500 - $5,000+ (depending on the extent of the damage and required repairs)
  • Recalls: None Found

Transmission

6-Speed Manual

• Grinding into Second Gear
  • Description/Symptoms: Some owners report experiencing a grinding noise or difficulty shifting into second gear, especially when the transmission is cold.
  • Solution: Replacing the transmission fluid with a higher-quality synthetic fluid sometimes alleviates the issue. In severe cases, a transmission rebuild or replacement may be necessary.
  • Estimated Cost to Fix: $100 (fluid change) - $3,000+ (transmission rebuild/replacement)
  • Recalls: None Found

6-Speed Automatic

• Harsh Shifting
  • Description/Symptoms: Some owners report harsh or jerky shifting, particularly between certain gears.
  • Solution: A software update or recalibration of the transmission control module (TCM) may resolve the issue. In some cases, a transmission service (fluid change) may be recommended.
  • Estimated Cost to Fix: $100 - $500+
  • Recalls: None Found

Suspension

No Issues Found

Electrical

• Infotainment System Freezing/Crashing
  • Description/Symptoms: The infotainment system (Mazda Connect) can sometimes freeze, crash, or become unresponsive.
  • Solution: A software update from the dealer is often the solution.
  • Estimated Cost to Fix: $0 - $150+ (depending on warranty coverage and dealer charges)
  • Recalls: None Found
• Battery Drain Issues
  • Description/Symptoms: Some owners have reported issues with the battery draining quickly, especially if the car sits unused for a few days.
  • Solution: Having the battery tested and replaced may resolve the issue. A parasitic drain test can identify if there’s a component draining power while the car is off.
  • Estimated Cost to Fix: $100 - $300+ (depending on battery type and labor costs)
  • Recalls: None Found

Exterior

• Convertible Top Leaks
  • Description/Symptoms: Water leaks into the cabin of the car
  • Solution: Convertible top adjustment or replacement of weather stripping may resolve the issue.
  • Estimated Cost to Fix: $200 - $2,000+
  • Recalls: None Found

Interior

• Rattling Noises
  • Description/Symptoms: Some owners have reported rattling noises emanating from the dashboard, door panels, or convertible top mechanism.
  • Solution: Locating the source of the rattle and applying felt tape or other sound-deadening material.
  • Estimated Cost to Fix: $0 - $200+ (depending on whether you DIY or have a mechanic diagnose and fix it)
  • Recalls: None Found

Summary

The 2021 Mazda MX-5 Miata, while generally reliable, does have some reported issues. The excessive oil consumption is potentially the most serious and costly, while electrical glitches and rattles are more common but less expensive to address. The manual transmission grinding issue, while not widespread, is a concern for some enthusiasts. Overall, prospective buyers should be aware of these potential issues and have a pre-purchase inspection performed.